These Wi-Fi routers can help detect motion in your home, but are also sparking privacy worries – here's why

A diagram showing a Wi-Fi router with motion-sensing powers, next to an Xfinity router on a purple background.

• Xfinity, a Comcast brand, has introduced a new feature dubbed Wi-Fi Motion
• It lets an Xfinity router and up to three Wi-Fi-connected devices create a motion detection system
• The feature isn't available to everyone, but some users already have potential privacy concerns

Having a router that doubles as a motion detector was not on our bingo card for 2025, and yet, here we are. Xfinity by Comcast has introduced Wi-Fi Motion, a feature that lets you turn your printer, your smart fridge, or your TV – among other things – into a motion detector. But is that really a good thing?